How to use buttons, that is, js, to control the arrow keys on the keyboard?

how do I use buttons, that is, js, to control the arrow keys on the keyboard?
want a js code example?

Apr.13,2022

there will be keycode in keydown ev for normal keyboard events if you want to use buttons

you can pass parameters and keycode to execute the method


js cannot simulate a user's keyboard operation, but can only listen to keyboard events and determine which key is clicked by event.keycode

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